Wildfire and the Evolution of Dorsal Melanism in Fox Squirrels, Sciurus niger

1989 ◽  
Vol 70 (4) ◽  
pp. 726-739 ◽  
Author(s):  
R. A. Kiltie
Keyword(s):  
Sciurus Niger ◽  
Fox Squirrels

A COMPARISON OF PARASITIC HELMINTHS AND ARTHROPODS FROM TWO SUBSPECIES OF FOX SQUIRRELS (SCIURUS NIGER) IN FLORIDA

1996 ◽  
Vol 32 (3) ◽  
pp. 492-497 ◽  
Author(s):  
Donald F. Coyner ◽  
John B. Wooding ◽  
Donald J. Forrester
Keyword(s):  
Sciurus Niger ◽  
Parasitic Helminths ◽  
Fox Squirrels

scholarly journals Daily Activity and Nest Occupation Patterns of Fox Squirrels (Sciurus niger) throughout the Year

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0151249 ◽  
Author(s):  
Thomas Wassmer ◽  
Roberto Refinetti
Keyword(s):  
Daily Activity ◽  
Sciurus Niger ◽  
Fox Squirrels

Spatial orientation on a vertical maze in free-ranging fox squirrels (Sciurus niger).

1999 ◽  
Vol 113 (2) ◽  
pp. 116-127 ◽  
Author(s):  
Lucia F. Jacobs ◽  
Michael W. Shiflett
Keyword(s):  
Spatial Orientation ◽  
Sciurus Niger ◽  
Fox Squirrels ◽  
Free Ranging

A Baylisascaris Outbreak in Fox Squirrels (Sciurus niger) and Subsequent Detection of Francisella tularensis in Kansas, USA

2020 ◽  
Vol 56 (2) ◽  
pp. 457
Author(s):  
Emily C. Vincent ◽  
Mark G. Ruder ◽  
Michael J. Yabsley ◽  
Vincent S. Hesting ◽  
M. Kevin Keel ◽  
...  
Keyword(s):  
Francisella Tularensis ◽  
Sciurus Niger ◽  
Fox Squirrels

Effects of adults on the demography of fox squirrels (Sciurus niger)

1985 ◽  
Vol 63 (4) ◽  
pp. 861-867 ◽  
Author(s):  
Lonnie P. Hansen ◽  
Charles M. Nixon
Keyword(s):  
Home Range Size ◽  
Adult Males ◽  
Sciurus Niger ◽  
Age Classes ◽  
Control Grid ◽  
Local Populations ◽  
Adult Females ◽  
Resource Limited ◽  
Fox Squirrels ◽  
Reproductive Rates

As a test of the hypothesis that adult fox squirrels (Sciurus niger) regulate the number of immature and adult squirrels entering a population, each fall from 1979 to 1981 adult males were removed from two grids (male-removal grids, MRGs), adult females from two grids (female-removal grids, FRGs), all adults from one grid (adult-removal grid, ARG), and one grid was maintained as a control (control grid, CG). The number of previously uncaptured juveniles and subadults (both sexes) and yearling–adult females was greater on FRGs than on the CG and MRGs, especially during the fall. The number of new adult males captured during the fall was higher where adult males had been removed. During spring, reproductive rates (percent lactating) were higher on grids from which females had been removed (FRGs and the ARG), but this was not so during fall. Length of residency was shorter for juvenile–subadult and adult fox squirrels and longer for yearling females where adult females had been removed. Movement patterns in response to removal of adults suggested resident adult females influenced home range size of all sex classes and age-classes. We conclude that the presence of adult females is important in limiting recruitment in local populations of fox squirrels and that this strategy likely evolved in response to resource-limited environments.

scholarly journals Erratum to: Melanism as a potential thermal benefit in eastern fox squirrels (Sciurus niger)

2020 ◽  
Vol 6 (1) ◽  
pp. 16
Author(s):  
James Wilson
Keyword(s):  
Sciurus Niger ◽  
Fox Squirrels

Acrobatic squirrels learn to leap and land on tree branches without falling

Science ◽  
2021 ◽  
Vol 373 (6555) ◽  
pp. 697-700
Author(s):  
Nathaniel H. Hunt ◽  
Judy Jinn ◽  
Lucia F. Jacobs ◽  
Robert J. Full
Keyword(s):  
Sciurus Niger ◽  
Trade Off ◽  
Impulse Generation ◽  
Fox Squirrels ◽  
Innovative Solution ◽  
Life Threatening ◽  
Gap Crossing ◽  
Free Ranging

Arboreal animals often leap through complex canopies to travel and avoid predators. Their success at making split-second, potentially life-threatening decisions of biomechanical capability depends on their skillful use of acrobatic maneuvers and learning from past efforts. Here, we found that free-ranging fox squirrels (Sciurus niger) leaping across unfamiliar, simulated branches decided where to launch by balancing a trade-off between gap distance and branch-bending compliance. Squirrels quickly learned to modify impulse generation upon repeated leaps from unfamiliar, compliant beams. A repertoire of agile landing maneuvers enabled targeted leaping without falling. Unanticipated adaptive landing and leaping “parkour” behavior revealed an innovative solution for particularly challenging leaps. Squirrels deciding and learning how to launch and land demonstrates the synergistic roles of biomechanics and cognition in robust gap-crossing strategies.

Westward Expansion of Melanistic Fox Squirrels (Sciurus niger) in Omaha, Nebraska

2013 ◽  
Vol 170 (2) ◽  
pp. 393-401 ◽  
Author(s):  
James A. Wilson
Keyword(s):  
Sciurus Niger ◽  
Westward Expansion ◽  
Fox Squirrels
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